Go Back   EcoModder Forum > EcoModding > Aerodynamics
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-21-2018, 06:32 AM   #1 (permalink)
Master EcoModder
 
Join Date: Jun 2016
Location: KY
Posts: 1,346

IGL - '04 Saturn Ion
Team Saturn
90 day: 56.19 mpg (US)
Thanks: 63
Thanked 364 Times in 268 Posts
Just an idea...

While my car is gonna be apart for bodywork, I considered buying some lawn edging and adding an air dam, and then I had a brain fart...

Why not try and make front and rear wheel air curtains?

Attached Thumbnails
Click image for larger version

Name:	55F45787-F682-4A34-B382-EDA7BE2CED9B.jpg
Views:	116
Size:	39.5 KB
ID:	24259  
__________________
My current Ecotec project...


My last Ecotec project...
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-21-2018, 08:28 AM   #2 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
Give it a try, worse thing that could happen is it does not work as imagined and you have to remove it or block it off.

From what I've read these things are extensively tested and not shot at from the hip.

Shoot from the hip, what the heck.

The rear elements look similar to what is seen on semi-tractor trailers, perhaps they could be longer and at a gentler angle?

The front chamber looks like one of those bernoulli/venturi diagrams that explain pressure and velocity.

https://anjungsainssmkss.wordpress.c...in-air-flight/


Aren't most air-curtains big mouth, small exit?

There is an energy consumption factor or "work done" when squeezing and unsqueezing air. Energy/drag considerations.

Maybe do what you can to merely redirect air and not work it too much either way?
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
Old 05-21-2018, 08:45 AM   #3 (permalink)
Master EcoModder
 
Join Date: Jun 2016
Location: KY
Posts: 1,346

IGL - '04 Saturn Ion
Team Saturn
90 day: 56.19 mpg (US)
Thanks: 63
Thanked 364 Times in 268 Posts
I did alternately think about skipping the tire spat and just angling the side skirt from inside of front tire to outside of rear tire... I also meant to draw a little bigger gap in the front design, but I doodled it in like 45sec
__________________
My current Ecotec project...


My last Ecotec project...
  Reply With Quote
Old 05-21-2018, 12:11 PM   #4 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 27,561
Thanks: 7,736
Thanked 8,554 Times in 7,041 Posts
What are the relative heights of the component parts?

Air curtains are for steerable wheels. Do you have rear-wheel steering? Else skirts.

The rear wheel 'curtain' as drawn is occluded by the side curtain anyway.
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
  Reply With Quote
Old 05-21-2018, 02:19 PM   #5 (permalink)
Moderator
 
Vman455's Avatar
 
Join Date: Feb 2012
Location: Urbana, IL
Posts: 1,935

Pope Pious the Prius - '13 Toyota Prius Two
Team Toyota
SUV
90 day: 51.62 mpg (US)

Tycho the Truck - '91 Toyota Pickup DLX 4WD
90 day: 22.22 mpg (US)
Thanks: 198
Thanked 1,797 Times in 937 Posts
The one problem I see is, every air curtain I've looked at on a production car (and I've looked at most, if not all of them) sits in the middle-to-top area of the wheel housing, not the bottom. It might be easier to add these Ioniq air curtain ducts to your bumper cover while you have it off. At $6 per, it's a cheap, OEM-engineered solution that's pretty much guaranteed to work; all you have to figure out is how to get intake air to them.

Quote:
Originally Posted by freebeard View Post
What are the relative heights of the component parts?

Air curtains are for steerable wheels. Do you have rear-wheel steering? Else skirts.

The rear wheel 'curtain' as drawn is occluded by the side curtain anyway.
The 2018 Honda Clarity uses rear wheel air curtains.



As they demonstrated with the original Insight, the public won't buy skirted cars.
__________________
UIUC Aerospace Engineering
www.amateuraerodynamics.com
  Reply With Quote
The Following User Says Thank You to Vman455 For This Useful Post:
freebeard (05-21-2018)
Old 05-22-2018, 03:26 AM   #6 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
Quote:
Originally Posted by Vman455 View Post
Ioniq
Let's try that link again.

https://www.hyundaipartsdeal.com/par...nt-bumper.html

Other images.

Nosing ahead: Hyundai Ioniq Electric reviewed
18 October 2016
by Lem Bingley
Nosing ahead: Hyundai Ioniq Electric reviewed




Quote:
No doubt the Ioniq’s shape is aerodynamically efficient. Other, less obvious tweaks for the sake of efficiency include plastic inserts between the spokes of the alloy wheels, creating a smoother surface without much extra weight, and vertical slots in the front bumper that create an “air curtain” to help reduce turbulence from the spinning front wheel.
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
Old 05-22-2018, 09:58 AM   #7 (permalink)
Moderator
 
Vman455's Avatar
 
Join Date: Feb 2012
Location: Urbana, IL
Posts: 1,935

Pope Pious the Prius - '13 Toyota Prius Two
Team Toyota
SUV
90 day: 51.62 mpg (US)

Tycho the Truck - '91 Toyota Pickup DLX 4WD
90 day: 22.22 mpg (US)
Thanks: 198
Thanked 1,797 Times in 937 Posts
Quote:
Originally Posted by kach22i View Post
Both links work on my computer.... One is for the RH duct, the other for the LH.
__________________
UIUC Aerospace Engineering
www.amateuraerodynamics.com
  Reply With Quote
Old 05-22-2018, 04:58 PM   #8 (permalink)
Master EcoModder
 
kach22i's Avatar
 
Join Date: Jul 2011
Location: Ann Arbor, Michigan
Posts: 4,158
Thanks: 120
Thanked 2,790 Times in 1,959 Posts
Quote:
Originally Posted by Vman455 View Post
Both links work on my computer.... One is for the RH duct, the other for the LH.
Strange, both are working on my computer now as well.

The Ioniq example follows the larger opening, smaller exit rule, and looks to be a little higher than the center-line of the wheel as well.
__________________
George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
  Reply With Quote
Old 05-22-2018, 10:19 PM   #9 (permalink)
Master EcoModder
 
mpg_numbers_guy's Avatar
 
Join Date: Feb 2018
Location: VA
Posts: 1,363

Toby - '13 Toyota Prius C
90 day: 64.01 mpg (US)

Daz - '15 Mazda 3 iTouring w/ Tech Package
90 day: 38.2 mpg (US)
Thanks: 321
Thanked 480 Times in 365 Posts
The rear wheel spats in the original picture look like they would increase the size of your wake by shooting air out the sides instead of directing it around.
__________________
2013 Toyota Prius C 2 (my car)


2015 Mazda 3 iTouring Hatchback w/ Tech Package (wife's car)
  Reply With Quote
Old 05-22-2018, 10:32 PM   #10 (permalink)
Master EcoModder
 
Join Date: May 2010
Location: Illinois
Posts: 475

Oh Deer - '03 Ford Ranger XL
90 day: 33.97 mpg (US)
Thanks: 55
Thanked 91 Times in 72 Posts
This idea sounds familiar. LoL.

http://ecomodder.com/forum/showthrea...hts-29302.html

__________________
If nice guys finish last, are you willing to pay the price to finish first ?




  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com